Are volcanoes cause of earthquakes?
No. Volcanoes can cause earthquakes, but they are not caused by earthquakes. Both volcanoes and earthquakes are commonly found at plate boundaries
Volcanoes are not the primary cause of earthquakes. Most earthquakes result from the stresses created by tectonic plates moving past or against one another. At transform boundaries there is no mechanism to produce volcanoes, but the movement of the plates will still cause earthquakes. Stresses within a plate can also cause earthquakes.